AndrewRichards

Yes, I know that, thanks, but what I meant by my question was that is it possible NOT to use the built-in collections editor so that collections are displayed in the propertygrid hierarchically not as a popup ?

For example, what propertygrid does right now:

Name John Smith
Birthday 4/26/1934
Children (opens a popup)

..But what I look for is that the business object can be edited as a treeview:

Name John Smith
Birthday 4/26/1934
[-] Children (Children subcollection is expanded)
[1] Person
Name Jack Smith
Birthday 1/1/1964
[+] Children (this subcollection can be expanded)
[1] Person
Name Janet Smith
Birthday 1/1/1965
[+] Children (this subcollection can be expanded)

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